Detect CONNECTIVITY CHANGE in Android 7 and above when app is killed/in background

Question

Problem:

So the problem is that I have an app which sends a request to our backend whenever WiFi is connected (with the connected SSID and other inf

Answer 1

Another approach which is simpler and easier when you use registerNetworkCallback (NetworkRequest, PendingIntent):

NetworkRequest.Builder builder = new NetworkRequest.Builder();
builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET);
builder.addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR);
builder.addTransportType(NetworkCapabilities.TRANSPORT_WIFI);
builder.addTransportType(NetworkCapabilities.TRANSPORT_VPN);

ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
Intent intent = new Intent(this, SendAnyRequestService.class);

PendingIntent pendingIntent = PendingIntent.getService(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);
if (connectivityManager != null) {
    NetworkRequest networkRequest = builder.build();
    connectivityManager.registerNetworkCallback(networkRequest, pendingIntent);
}

Which is SendAnyRequestService.class is your service class, and you can call your API inside it.

This code work for Android 6.0 (API 23) and above

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